# PlanTodo vs Authenticator

The clearest difference is in-app purchases: PlanTodo at none against Authenticator's 3. PlanTodo also leads on device support (4 vs 2). Authenticator's advantage is update cadence (fortnightly vs monthly). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Authenticator sells 3 in-app purchases, starting at $9.99 per 7 days. PlanTodo asks for nothing beyond the download.

PlanTodo ships an update monthly, Authenticator fortnightly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PlanTodo | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 28 MB | 25 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [潮洋 宋](https://appshunter.io/developer/1895793192) | [鹤超 何](https://appshunter.io/developer/1830370727) |

## What reviewers say

### PlanTodo

[App page](https://appshunter.io/ios/app/plantodo-task-from-plan/id6764485281)

**Features:** Vision Pro support

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-and/id6764779638)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Token | $9.99 | per 7 days |
| Token | $24.99 | per month |
| Token | $39.99 | per 3 months |


## Frequently asked questions

### Is PlanTodo free?

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

### Is Authenticator free?

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

### Do PlanTodo or Authenticator have ads?

Neither PlanTodo nor Authenticator shows ads.

### Which is updated more often, PlanTodo or Authenticator?

PlanTodo ships an update monthly, and Authenticator fortnightly. Most recently, PlanTodo was updated on October 31, 2026 and Authenticator on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*