# Calibrate vs DayTimer

The clearest difference is iOS requirement: DayTimer at 15.1 against Calibrate's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Calibrate sells 1 one-off in-app purchase and DayTimer sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on October 14, 2026.

## The numbers

| Metric | Calibrate | DayTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/daytimer-time-blocking/id6799576985/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 35 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Warren Peters](https://appshunter.io/developer/1591974619) | [Rajai Baboun](https://appshunter.io/developer/6799576987) |

## What reviewers say

### 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 |


### DayTimer

[App page](https://appshunter.io/ios/app/daytimer-time-blocking/id6799576985)

This app provides a minimal and calm way to structure your day with timed blocks and breaks. It allows for on-the-fly adjustments to your schedule, ensuring you can adapt to interruptions without falling behind. Save common schedules as templates for easy reuse.

**Highlights:** Timed task blocks, Automatic schedule re-flow, On-the-fly task insertion, Task rearrangement, Reusable day templates, Scheduled day loading

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Little Boost! | $0.99 | one-time |
| DayTimer Supporter | $1.99 | one-time |
| Buy me a coffee | $3.99 | one-time |
| Lunch Tip! | $5.99 | one-time |


## Frequently asked questions

### Is Calibrate free?

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

### Is DayTimer free?

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

### Do Calibrate or DayTimer have ads?

Neither Calibrate nor DayTimer shows ads.

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

Calibrate ships an update fortnightly, and DayTimer fortnightly. Most recently, Calibrate was updated on October 14, 2026 and DayTimer on October 14, 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.*