My Body Log vs UnDo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
My Body Log
Read full descriptionHide full description
We all get small aches and pains - My Body Log is a quick and easy way to record when they happen, so that you can see when they started and have a record of how they progress over time. This free app does NOT provide advice - it just lets you log what happens. It is genuinely free: no ads, no data collection, no analytics. Your data stays entirely in your Apple account. I built this for myself and thought others might find it useful. There's an optional tip jar, but it doesn't change anything about how the app works. You log what happened, and in addition you can optionally log: * How it is on a scale of 1-10 * Which part of your body it happened to * What caused it (triggers) * When it happened * How long it lasted for * Any additional notes * Up to four photos or short videos. You can also set a reminder to ask yourself how things are in a day, a week, a month or a year. Selected items can be logged to Apple Health. Want to log things that happen to someone else, or a pet? You can set up multiple profiles to log for different people or very good dogs (or cats). The EULA is here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
UnDo
Read full descriptionHide full description
你是否已经厌倦了各种充满压迫感的 To-Do List 和打卡软件? 一旦中断就红牌警告,没完成任务就充满负罪感——这不该是管理生活的方式。 UnDo 是一款围绕“克制冲动”设计的轻量级应用。它不是监督你“要做什么”的严厉教练,而是一个帮你暂存冲动、拉开反应距离的“欲望降温箱”。 【核心功能】 欲望捕获与冷冻: 当冲动发生时(想冲动消费、想熬夜、想点高热量外卖),别急着行动,先把它写下来并放入“冰块”中冷冻。拉开距离,是化解冲动的第一步。 诚实的主动结算: 冷却期结束后,系统会轻量提示你回看并结清。结果只有两个:我破功了,或者我忍住了。 零压力的失败处理: 如果没忍住,点击“破功”,该记录会直接从本地数据中静默删除。我们不保留失败历史,不累计失败次数,拒绝给你增加羞耻感。 静谧的收集箱: 如果你成功克制了冲动,它将转化为美丽的琥珀,永久存入收集箱中。这里只记录成功,不记录失败。 【产品特色】 极简输入,支持快捷选项与照片附加。 灵活的自定义冷却时长(从 1 分钟到 24 小时)。 数据完全基于本地持久化存储,你的欲望和隐私只属于你自己。 在 UnDo,放下焦虑,享受没有压力的静谧胜利。 (推荐在iOS26进行使用,体验会更好)
Screenshots
Verdict
The clearest difference is in-app purchases: UnDo at none against My Body Log's 3. UnDo also leads on update cadence (weekly vs every 4 weeks) and iOS requirement (17.6 vs 26.0). My Body Log's advantage is device support (3 vs 1). On price and ads 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. My Body Log sells 3 one-off in-app purchases. UnDo asks for nothing beyond the download.
My Body Log ships an update every 4 weeks, UnDo weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | My Body Log | UnDo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Atadore | 朝峰 陈 |
In-app purchases
My Body Log
- Small Thanks$2.99
- Thanks$5.99
- Big Thanks$9.99
UnDo
No in-app purchases








