# Bound vs Calibrate

The clearest difference is in-app purchases: Bound at none against Calibrate's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calibrate sells 1 one-off in-app purchase. Bound asks for nothing beyond the download.

Bound ships an update every 2 weeks, Calibrate fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Bound | Calibrate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Size | 1 MB | 4 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Robin Naghshbandi](https://appshunter.io/developer/1684986624) | [Warren Peters](https://appshunter.io/developer/1591974619) |

## What reviewers say

### Bound

[App page](https://appshunter.io/ios/app/bound-on-time-every-time/id6448568471)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calibrate

[App page](https://appshunter.io/ios/app/calibrate-time-block-planner/id6758213974)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calibrate Pro — Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Bound free?

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

### Is Calibrate free?

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

### Do Bound or Calibrate have ads?

Neither Bound nor Calibrate shows ads.

### Which is updated more often, Bound or Calibrate?

Bound ships an update every 2 weeks, and Calibrate fortnightly. Most recently, Bound was updated on October 25, 2026 and Calibrate on October 25, 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.*