# Solid Calendar vs Forma

The clearest difference is update cadence: Solid Calendar at fortnightly against Forma's every 2 months. Solid Calendar also leads on device support (3 vs 1) and iOS requirement (16.0 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Solid Calendar sells 2 one-off in-app purchases and Forma sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Solid Calendar ships an update fortnightly, Forma every 2 months. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Solid Calendar | Forma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (120 ratings)](https://appshunter.io/ios/app/solid-calendar/id6448245807/reviews)** | — |
| Number of ratings | **120** | — |
| Positive reviews | 78.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | — |
| Size | 19 MB | 169 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Solid Apps S.R.L.](https://appshunter.io/developer/1653740418) | [Sabina Babayeva](https://appshunter.io/developer/1782749297) |

## What reviewers say

### Solid Calendar

[App page](https://appshunter.io/ios/app/solid-calendar/id6448245807)

This app helps you manage your time, tasks, and events with a natural language interface. It acts as a digital planner, rotating schedule manager, and reminder system, syncing with your existing device calendars for seamless organization.

**Highlights:** Add events with natural language input, Calendar planner with intuitive interface, Digital planner for tasks and to-do lists, Rotating schedule management, Quick join for video calls, Reminders and smart notifications, Multiple layout options

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock this app (lifetime) | $4.99 | one-time |
| Unlock ALL 10 Solid Apps (lifetime) | $9.99 | one-time |

**What reviewers like**

- ✨ Brilliant app overall
- 👍 Easy to use interface
- 🎨 Visually appealing design
- 💰 Affordable one-time purchase
- 🚀 Fast loading and performance

**What reviewers complain about**

- 🤔 Account required for sync
- 📅 Weekly view horizontal events
- 🐛 Sync issues with date
- ❓ Widgets feel like afterthought
- 🐛 App crashes after update

**Reported bugs**

- Date is a day behind in Australia
- Jumps back to today's date when viewing future dates
- App crashes every time after last update
- Changing daily event time affects rest of week incorrectly
- Weekly view shows all-day events horizontally like timed events

**Requested features**

- Display checkmarks for finished appointments
- Better task management landing pad, floating to-dos
- Option to display little checkmarks for finished appointments
- Floating to-do's on widget page
- Option to display little checkmarks for finished appointments


### Forma

[App page](https://appshunter.io/ios/app/forma-discipline-tracker/id6770200491)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forma Plus | $2.99 | per month |
| Forma Plus | $14.99 | per year |


## Frequently asked questions

### Is Solid Calendar free?

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

### Is Forma free?

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

### Do Solid Calendar or Forma have ads?

Neither Solid Calendar nor Forma shows ads.

### Which is updated more often, Solid Calendar or Forma?

Solid Calendar ships an update fortnightly, and Forma every 2 months. Most recently, Solid Calendar was updated on October 20, 2026 and Forma 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.*