# ondot timer｜No vs Study Timer

The clearest difference is in-app purchases: ondot timer｜No at none against Study Timer's 1. ondot timer｜No also leads on ads (none vs shown) and update cadence (every 3 days vs fortnightly). Study Timer's advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Study Timer sells 1 in-app purchase, starting at $0.99 per month. ondot timer｜No asks for nothing beyond the download.

ondot timer｜No ships an update every 3 days, Study Timer fortnightly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | ondot timer｜No | Study Timer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free | — |
| Size | 3 MB | 13 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Momoka Shiramizu](https://appshunter.io/developer/1880005033) | [Mikoto Gateway](https://appshunter.io/developer/6795057863) |

## What reviewers say

### ondot timer｜No

[App page](https://appshunter.io/ios/app/ondot-timerno-math-timer/id6762602662)

This app eliminates the need for time calculations by allowing you to set timers based on a desired end time or duration. It displays both the ringing time and remaining time at a glance, perfect for tasks and deadlines.

**Highlights:** Set timers by desired end time, Set timers by duration, See ringing time and time remaining, Save frequent timer presets, Apple Watch integration, Live Activity on Lock Screen/Dynamic Island

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Study Timer

[App page](https://appshunter.io/ios/app/study-timer-streaks-and-reward/id6795408104)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.99 | per month |


## Frequently asked questions

### Is ondot timer｜No free?

ondot timer｜No is free to download, with no in-app purchases.

### Is Study Timer free?

Study Timer is free to download, with in-app purchases available.

### Do ondot timer｜No or Study Timer have ads?

Study Timer shows ads; ondot timer｜No does not.

### Which is updated more often, ondot timer｜No or Study Timer?

ondot timer｜No ships an update every 3 days, and Study Timer fortnightly. Most recently, ondot timer｜No was updated on October 20, 2026 and Study Timer on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*