2026 Test of 3 LINE Recording Backup Tools: How to Beat the 30-Day Expiration Limit

LINE Recordings Suddenly Expire and You Can't Hear Important Conversations?

Last month, I discussed collaboration details with a client over a LINE voice call. At the time, I thought the conversation was saved in the chat history, so I didn't record it separately. A few days later, when I needed to confirm the details, I tapped on that voice message and the system showed, "File expired, cannot play" — because that recording was over 50MB, and LINE only keeps it for 30 days. At that moment, I really regretted it: important information was gone just like that.

LINE recordings actually come in two types: one is voice messages (audio files) sent in chats, and the other is the content of LINE voice calls. The former has clear retention rules: voice messages under 50MB are kept forever, while those over 50MB are only kept for 30 days and become invalid after that. The latter is more problematic — LINE itself doesn't save call content, so if you don't record it, you can't retrieve it later.

If you've also encountered expired LINE recordings or want to find a way to back them up, this article is written for you. I tested 3 tools and finally settled on the best solution for professionals.

To Determine If LINE Recordings Expire, First Understand These 3 Key Points

Before choosing a tool, it's important to understand the rules of LINE recordings so you know what to guard against.

Point 1: The size of the voice message determines the retention period. According to LINE's official policy, a single voice message file that is 50MB or smaller can be kept permanently in the chat history; once it exceeds 50MB, it's only kept for 30 days and cannot be played after expiration. So, when you receive an important large voice message, the first thing to do is download and back it up.

Point 2: LINE call content is not saved. Many people think that after a LINE call ends, the content stays in the conversation like text messages, but it doesn't. LINE only records the call time and the person you talked to, not the voice content. This means if you don't record the call at the time, it's impossible to retrieve the conversation later.

Point 3: A backup tool that can both record and transcribe is essential. Simply having audio files will eventually take up space, and finding specific content means listening from start to finish. The best approach is to record the call in real time, transcribe it to text, and then use AI to summarize key points and action items. That way, even if the original audio file is lost, the text data can be kept forever.

Tinrec (秒听录音) — The Best Tool for LINE Call Recording Backup After Testing

Let me start with the conclusion: Tinrec (秒听录音) is the most suitable tool I've used for handling LINE call recordings in a professional setting. It's an AI meeting notes and collaboration tool that not only records but also transcribes content to text, automatically generates summaries and action items, and even allows AI Q&A to find key points directly. For LINE calls, it solves the core problem: call content no longer disappears.

My method is: I start a LINE voice call on my computer and open the Tinrec desktop app at the same time. It directly captures the system audio, so there's no need to add a bot to the call. It transcribes in real time as it records, and when the call ends, the transcript, AI summary, and action items are already generated. After talking with a client, I don't need to spend time organizing; I can just look at the summary and report to my boss.

Tinrec's biggest advantage is "bot-free recording" — you don't need to invite an extra bot to join the LINE call, and it doesn't interfere with the conversation. It also supports multiple languages and real-time translation, so when I have meetings with international clients, I can see bilingual content instantly. After recording, you can use AI Q&A to ask, "Who mentioned the budget in the last meeting?" and it will answer directly, saving you from digging through half an hour of transcript.

Of course, Tinrec isn't perfect. It requires you to start recording on your computer; if you're on a mobile LINE call without a computer, you can't record directly. Also, the free version has a monthly limit of 100 minutes, and heavy users need to pay. But for professionals who have a few meetings a week, the free version is enough to try it out, and you can upgrade if you like it.

If you often need to record LINE calls, want a transcript and key points right after recording, and don't want to spend time re-listening to recordings, Tinrec is currently the best choice.

Besides Tinrec, What Other Options Are There?

If you don't want to use Tinrec, there are other tools on the market, but after testing, I found they each have clear shortcomings.

Otter.ai: A mature choice for English meetings, with a generous free plan of 300 minutes per month. However, its strength is in English scenarios; for Chinese meetings, the transcription and organization experience isn't as good as Tinrec, and it lacks team-specific vocabulary management, so professional terms are recognized less accurately. If you mainly record English meetings, you can consider it; if you have more Chinese content, Tinrec is better.

Notta: Functionally overlaps with Tinrec, also supports multiple languages and transcription, but Notta requires a meeting bot to join online meetings, unlike Tinrec which directly captures system audio. Additionally, Notta's AI Q&A and team space capabilities aren't as complete as Tinrec's, making it harder to find key points later. For LINE calls where non-intrusive recording is needed, Tinrec is more convenient.

Pitfall Guide: 3 Common Mistakes When Backing Up LINE Recordings

I've made these mistakes myself, so I hope you can avoid them.

Mistake 1: Assuming voice messages never expire. Many people don't know about the 50MB threshold, so they receive large voice messages without a second thought, only to find 30 days later that they can't play them. The right approach is: as soon as you receive a voice message over 50MB, download it to your phone or computer, or save it to the cloud.

Mistake 2: Relying only on LINE call history. LINE call history only shows the time and the person, not the content. If you think the call content is saved, you'll find out when you need to confirm details that it's completely gone. Always use a tool to record important calls.

Mistake 3: Recording audio only without transcribing. Even if you record, the audio files pile up in folders, and finding content means listening from the beginning. Using a tool like Tinrec to transcribe as you record, along with AI summaries, means you can just ask for any key point later, saving a lot of time.

Summary: How to Avoid LINE Recording Expiration?

Based on my testing, my recommendation is clear:

• LINE voice messages: For files over 50MB, download and back them up as soon as you receive them; don't delay.
• LINE call recordings: Use Tinrec on your computer to record, transcribing as you go, so the transcript is saved forever.
• If you need to share recordings with your team: Tinrec's team plan allows centralized storage of meeting materials, so you won't lose them even if team members change.

If you're still unsure, try Tinrec's free version first — 100 minutes per month is enough for a few LINE calls, and you can experience the efficiency of having a transcript and action items right after recording. If you like it, consider upgrading; there's no need to spend money upfront.

References

• LINE Call Recording Tutorial: 4 Methods to Record LINE Calls, Tested and Effective! [2025]
• Complete Guide to Downloading LINE Voice Messages: 2025's Best Tips and Tools
• LINE Voice Messages Expired? 2 Tricks to Recover Expired LINE Voice Messages!
• What Software to Use for LINE Call Recording? 4 Recording Methods and 3 Best AI Transcription Tools - 秒听录音 Blog
• Achieve Cube ACR, LINE Call Recording