# Session vs Only One Thing

The clearest difference is in-app purchases: Session at none against Only One Thing's 1. Session also leads on ads (none vs shown) and iOS requirement (13.2 vs 15.1). Only One Thing's advantage is update cadence (every 9 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Only One Thing sells 1 one-off in-app purchase. Session asks for nothing beyond the download.

Session ships an update every 4 months, Only One Thing every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Session | Only One Thing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (936 ratings)](https://appshunter.io/ios/app/session-activity-timer/id1493474157/reviews)** | — |
| Number of ratings | **936** | — |
| Positive reviews | 76.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 1 MB | 101 MB |
| Requires iOS | **13.2** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Glasshouse Studio, LLC](https://appshunter.io/developer/1493474156) | [Gyuseop Park](https://appshunter.io/developer/1884791422) |

## What reviewers say

### Session

[App page](https://appshunter.io/ios/app/session-activity-timer/id1493474157)

Track your progress towards mastering skills by logging dedicated practice time. Manually log sessions or use the automatic timer to record your efforts. Start making measurable progress on your goals today.

**Highlights:** Create custom activities, Manual session logging, Automatic timer, Track progress towards goals, Skill mastery tracking

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Aesthetically pleasing
- ⏱️ Helpful for time management
- 💻 Simple and easy to use
- 🧠 Motivating for productivity

**What reviewers complain about**

- 🐛 Crashes when trying to edit activities
- 🔍 Lack of customization options (e.g. color, icon, order)
- 🗑️ No ability to delete activities
- ⏱️ Timer issues (stops unexpectedly, doesn't continue in background)

**Reported bugs**

- Timer inconsistencies when exiting the app
- Inability to add time manually (only minutes, not hours)
- App crashes when trying to add a session manually

**Requested features**

- Add delete and rename session functions
- Implement activity editing (color, icon, name, description)
- Provide activity reordering capability
- Include activity time tracking by day/week/month/year
- Add Pomodoro timer functionality


### Only One Thing

[App page](https://appshunter.io/ios/app/only-one-thing-focus-daily/id6763843169)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Ownership of Pro Version | $4.99 | one-time |


## Frequently asked questions

### Is Session free?

Session is free to download, with no in-app purchases.

### Is Only One Thing free?

Only One Thing is free to download, with in-app purchases available.

### Do Session or Only One Thing have ads?

Only One Thing shows ads; Session does not.

### Which is updated more often, Session or Only One Thing?

Session ships an update every 4 months, and Only One Thing every 9 days. Most recently, Session was updated on November 3, 2026 and Only One Thing on October 31, 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.*