# AchieveIt vs Sundial Time Marks

The clearest difference is update cadence: Sundial Time Marks at every 9 days against AchieveIt's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AchieveIt sells 1 in-app purchase, starting at $1.99 per month and Sundial Time Marks sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

AchieveIt ships an update every 4 months, Sundial Time Marks every 9 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AchieveIt | Sundial Time Marks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sundial-time-marks/id6807945181/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 92.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 4 MB | 33 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [笛 吴](https://appshunter.io/developer/1690923883) | [婉 唐](https://appshunter.io/developer/1555503576) |

## What reviewers say

### AchieveIt

[App page](https://appshunter.io/ios/app/achieveit/id6633427018)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription service | $1.99 | per month |


### Sundial Time Marks

[App page](https://appshunter.io/ios/app/sundial-time-marks/id6807945181)

Visualize your progress through natural cycles like days, weeks, years, and your lifetime with customizable widgets. See where you stand at a glance with visual marks representing past, present, and future. Your data remains private and synced across devices.

**Highlights:** Visualize time across natural cycles, Home Screen and Lock Screen widgets, Lifetime progress visualization, Customizable styles and palettes, Private iCloud synchronization, Monthly year-progress notifications

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sundial Pro Monthly | $0.99 | per month |
| Sundial Pro Yearly | $6.99 | per year |
| Sundial Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is AchieveIt free?

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

### Is Sundial Time Marks free?

Sundial Time Marks is free to download, with in-app purchases available.

### Do AchieveIt or Sundial Time Marks have ads?

Neither AchieveIt nor Sundial Time Marks shows ads.

### Which is updated more often, AchieveIt or Sundial Time Marks?

AchieveIt ships an update every 4 months, and Sundial Time Marks every 9 days. Most recently, AchieveIt was updated on November 4, 2026 and Sundial Time Marks 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.*