ThoughtTrace vs VOSUMI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThoughtTrace
Read full descriptionHide full description
"Think analog, save digital." ThoughtTrace is a seamless tool to digitally save and organize the deep thoughts you've written down with pen and paper. Some ideas are only born when you freely move a pen across a blank sheet of paper, rather than typing on a keyboard. ThoughtTrace maximizes this "handwritten thought process" and securely manages your notes afterward. ◆ 3 Core Features of ThoughtTrace ◆ 1. "Intelligent Timer" for Deep Thinking Place your iPhone or iPad on the corner of your desk and set the focus timer. Setting a time limit flips the switch in your brain to "just write." 2. "High-Quality Continuous Scan" for Handwritten Notes Once you finish writing, simply point the app's camera. It automatically detects document edges, removes hand shadows and wrinkles, and instantly converts your notes into crisp, highly legible black-and-white data. You can also continuously scan multiple pages without closing the camera. 3. Reflect and Organize (Folders, Tags, PDF Export) Beautifully organize your scanned notes using folders and tags. Look back on the trajectory of your thoughts through a chronological timeline. You can also combine multiple notes and export them as a single PDF (*Pro feature). ◆ Privacy First ◆ All your ideas and notes are saved strictly on your device. They are never sent to external servers, allowing you to write down your thoughts with complete peace of mind. *The free version has a daily limit on the number of scans. Upgrade to the Pro version with a one-time purchase to unlock "Unlimited Saves," "No Ads," and the "PDF Export" feature. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
VOSUMI
Read full descriptionHide full description
VOSUMI helps you understand spoken conversations as they happen. Use live speech translation for meetings, travel, study, and everyday conversations. Speak naturally, see text update in real time, keep the conversation in organized folders, and replay saved audio when you need to check what was said. What you can do: - Translate speech live between supported languages - Type quick phrases in manual translation mode - Save conversation history locally - Organize conversations with folders - Replay recorded source audio - Listen to translated speech when enabled - Add dictionary terms for names and specialist vocabulary - Record one-language conversations for notes and minutes VOSUMI is built with Apple frameworks. The app does not send your recordings, transcripts, or saved conversations to third-party servers. Supported speech and translation languages depend on your device, iOS version, and downloaded Apple language models.
Screenshots
Verdict
The clearest difference is in-app purchases: VOSUMI at none against ThoughtTrace's 1. VOSUMI also leads on ads (none vs shown) and update cadence (every 6 days vs every 3 weeks). ThoughtTrace's advantage is iOS requirement (17.0 vs 26.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ThoughtTrace sells 1 one-off in-app purchase. VOSUMI asks for nothing beyond the download.
ThoughtTrace ships an update every 3 weeks, VOSUMI every 6 days. The most recent releases landed on October 31, 2026 and October 9, 2026 respectively.
| Parameter | ThoughtTrace | VOSUMI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 19 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | JUNICHI WATANABE | Yusuke Teranishi |
In-app purchases
ThoughtTrace
- Pro Plan (Lifetime)$4.99
VOSUMI
No in-app purchases








