# Solid Calendar vs roamOS

The clearest difference is review sentiment: Solid Calendar at 79% against roamOS's 33%. Solid Calendar also leads on price (Free vs $19.99) and rating (4.9 vs 1.0). roamOS's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs fortnightly). On ads, monetization model and device support there is nothing between them.

Solid Calendar is free to download; roamOS costs $19.99 up front. Solid Calendar sells 2 one-off in-app purchases. roamOS asks for nothing beyond the download.

Solid Calendar holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Solid Calendar has 119 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 79% of Solid Calendar's written reviews are positive against 33% of roamOS's.

Solid Calendar ships an update fortnightly, roamOS every 4 days. The most recent releases landed on September 23, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Solid Calendar | roamOS |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[4.9 (119 ratings)](https://appshunter.io/ios/app/solid-calendar/id6448245807/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/roamos/id6749782598/reviews) |
| Number of ratings | **119** | 1 |
| Positive reviews | **78.9% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 19 MB | 6 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Solid Apps S.R.L.](https://appshunter.io/developer/1653740418) | [Ryan Sonnek](https://appshunter.io/developer/1832078341) |

## 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


### roamOS

[App page](https://appshunter.io/ios/app/roamos/id6749782598)

Seamlessly integrate your Roam Research knowledge base into your daily workflow. Capture ideas instantly, access notes via system search, and view tasks with customizable widgets without interrupting your focus.

**Highlights:** Instant capture via Siri and shortcuts, Customizable home screen widgets, System-wide search integration, Natural language queries, Cross-device compatibility (iPhone, iPad, Mac), One-time purchase with lifetime updates

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Solid Calendar free?

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

### Is roamOS free?

roamOS costs $19.99, with no in-app purchases.

### Which has better reviews, Solid Calendar or roamOS?

Solid Calendar is rated higher. Solid Calendar averages 4.9 out of 5 from 119 ratings, while roamOS averages 1.0 from 1 ratings.

### Do Solid Calendar or roamOS have ads?

Neither Solid Calendar nor roamOS shows ads.

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

Solid Calendar ships an update fortnightly, and roamOS every 4 days. Most recently, Solid Calendar was updated on September 23, 2026 and roamOS on September 7, 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.*