# Tempo study timer vs OneTime

The clearest difference is in-app purchases: Tempo study timer at none against OneTime's 4. Tempo study timer also leads on ads (none vs shown) and iOS requirement (14.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. OneTime sells 4 in-app purchases, starting at $0.99 per month. Tempo study timer asks for nothing beyond the download.

Tempo study timer ships an update fortnightly, OneTime weekly. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Tempo study timer | OneTime |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Size | 81 MB | 65 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daihun Kim](https://appshunter.io/developer/1881549980) | [UNCHAN BAEK](https://appshunter.io/developer/6774037513) |

## What reviewers say

### Tempo study timer

[App page](https://appshunter.io/ios/app/tempo-study-timer/id6759906734)

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

**In-app purchases:** none


### OneTime

[App page](https://appshunter.io/ios/app/onetime-daily-time-tracker/id6774037511)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Launch Monthly | $0.99 | per month |
| Monthly | $1.99 | per month |
| Token Bundle | $0.99 | one-time |
| Lifetime | $11.99 | one-time |


## Frequently asked questions

### Is Tempo study timer free?

Tempo study timer is free to download, with no in-app purchases.

### Is OneTime free?

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

### Do Tempo study timer or OneTime have ads?

OneTime shows ads; Tempo study timer does not.

### Which is updated more often, Tempo study timer or OneTime?

Tempo study timer ships an update fortnightly, and OneTime weekly. Most recently, Tempo study timer was updated on October 4, 2026 and OneTime on October 1, 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.*