# Opus One vs Solid Planner

Opus One and Solid Planner both sit at 4.7 stars, but that hides the real split: 100% of Solid Planner's written reviews are positive against 66% of Opus One's. Solid Planner also leads on monetization model (paid vs subscription). Opus One's advantage is ratings volume (955 vs 10). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Opus One sells 2 in-app purchases, starting at $4.99 per month and Solid Planner sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Opus One against 4.8 for Solid Planner. That said, the two scores are not equally well evidenced: Opus One has 955 ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 66% of Opus One's written reviews are positive against 100% of Solid Planner's.

Opus One ships an update every 3 weeks, Solid Planner monthly. The most recent releases landed on September 24, 2026 and August 2, 2026 respectively.

## The numbers

| Metric | Opus One | Solid Planner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (955 ratings)](https://appshunter.io/ios/app/opus-one-digital-planner/id941852977/reviews) | **[4.8 (10 ratings)](https://appshunter.io/ios/app/solid-planner-timer-plus-agenda/id6499594033/reviews)** |
| Number of ratings | **955** | 10 |
| Positive reviews | 65.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Subscription | **Paid** |
| Size | 184 MB | 20 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [PISO 13, Inc.](https://appshunter.io/developer/940653452) | [Solid Apps S.R.L.](https://appshunter.io/developer/1653740418) |

## What reviewers say

### Opus One

[App page](https://appshunter.io/ios/app/opus-one-digital-planner/id941852977)

This app helps you manage tasks and notes with a paperlike interface. Organize your day with daily task lists, schedules, and notes, and use a master task section to capture all your to-dos. Features include drag-and-drop reordering, event integration, and customizable notes.

**Highlights:** Master Task section, Daily Task lists with status, priority, and notes, Daily Schedule and Event integration, Daily Notes with customizable text formatting, Drag and drop task reordering, Cloud synchronization, Sketch drawing canvas

**Features:** Family Sharing, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Opus One Pro | $4.99 | per month |
| Opus One Professional | $39.99 | per year |

**What reviewers like**

- 🚀 Life changing
- 👍 Great app and support
- 👍 Integrates well with iPhone
- 👍 Keeps me organized and efficient
- 👍 Seamless sync across devices

**What reviewers complain about**

- 🐛 Sync issues and reliability problems
- 🐛 Lost data and app crashes
- 🔒 Concerns about free trial sign-ups
- 🔒 Difficult to cancel subscription
- 👎 Lacks weekly/monthly views

**Reported bugs**

- Sync issues between devices
- App crashes and data loss
- Keyboard not working on iPad
- Distorted font in calendar view

**Requested features**

- Add weekly and monthly views
- Improve Apple Pencil support
- Add project management features
- Integrate with more calendar/task apps
- Provide better training and tutorials


### Solid Planner

[App page](https://appshunter.io/ios/app/solid-planner-timer-plus-agenda/id6499594033)

This app helps you plan your day with a simple timer and agenda. It offers an AI review of your week, providing stats and insights to help you achieve your goals. Purchase it once to own it forever.

**Highlights:** Daily timer with task management, Goal pursuit tracking, AI weekly review and stats, One-time purchase, no subscriptions, Cross-device support (Mac, iPhone, iPad)

**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 |


## Frequently asked questions

### Is Opus One free?

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

### Is Solid Planner free?

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

### Which has better reviews, Opus One or Solid Planner?

Solid Planner is rated higher. Opus One averages 4.7 out of 5 from 955 ratings, while Solid Planner averages 4.8 from 10 ratings.

### Do Opus One or Solid Planner have ads?

Neither Opus One nor Solid Planner shows ads.

### Which is updated more often, Opus One or Solid Planner?

Opus One ships an update every 3 weeks, and Solid Planner monthly. Most recently, Opus One was updated on September 24, 2026 and Solid Planner on August 2, 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.*