Card Decks vs Retros
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Card Decks
Create and share custom card decks for various uses, from team meetings and planning to personal expression and task management. Configure individual cards with display times for timers or reminders, and easily share decks via email or messages.
- Configurable colored text cards
- Group cards into decks
- Create custom card sets
- Timer and countdown functionality
- Share decks via email/messages
- Open source
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Card Decks is a small utility application for your iPhone and iPad which brings you simple, configurable, colored, multi-line text cards that are grouped into card decks. A card deck can be used to show your vote or estimation on a certain topic in a meeting, e.g. in a planning meeting used in agile software development methods like Scrum or Extreme Programming. If the pre-configured cards don't fit your needs, just extend the existing cards or build your own set of cards, e.g. including special estimation numbers like "Pi" or "?". Or, if you are the chair of a session on a conference, you can use a card deck to remind a speaker of the remaining time for the presentation. Or, as a speaker, use a timer card deck to track the remaining minutes. Or, just use your cards to show your opinion, argument, or mood, in a simple, non-verbal way. Or, use the shuffle feature to randomly select a task from a card deck with tasks, or randomly assign tasks to students, team members, etc. Card Decks contains some pre-configured card decks with voting cards, simple colored cards, cards with numbers, colored cards which show remaining minutes, and some timers. Individual card decks can be created with the built-in editor. Each card in a card deck can be configured with a display time. This way, you can build your own countdown timer with individual numbers, texts, reminders, etc. Example timers for 15 and 60 minutes are pre-configured. Additionally, Card Decks supports sending and receiving card decks via e-mail, messages, etc. for sharing your card decks with your friends or colleagues. Either as an URL, or via a JSON-based document. Found a bug? Missing a feature? Drop a line to carddecks@0xc0.de, or open an issue in the project on GitHub. Card Decks is open source and licensed under the terms of the MIT license. Its source code is hosted on GitHub.
Retros
This app helps you organize thoughts and improve work through a KPT-based reflection journal. Capture insights, identify problems, and create actionable plans for personal or team growth. Sync your progress across devices and review your history with calendar views.
- KPT-based reflection entries
- Action plan creation and tracking
- Calendar and history views
- Private journaling space
- iCloud synchronization
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Retros is a KPT-based reflection journal for teams and personal growth. Capture Keeps, Problems, and Trys, then turn Trys into Action Plans you can toggle and track. Why Retros fits your workflow: • Quick KPT entries with focused writing • Action Plans you can start or cancel anytime • Calendar and History views for review • Private space for safe retrospectives • iCloud sync to keep everything in one place Spend 5 minutes a day to organize your thoughts, improve work, and grow steadily. Download Retros and make every retrospective actionable.
Screenshots
Verdict
The clearest difference is review sentiment: Card Decks at 78% against Retros's 0%. Card Decks also leads on rating (4.5 vs 2.0) and ads (none vs shown). Retros's advantage is update cadence (every 2 days vs every 5 months). On price, ratings volume, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Card Decks holds the better App Store score, 4.5 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 78% of Card Decks's written reviews are positive against 0% of Retros's.
Card Decks ships an update every 5 months, Retros every 2 days. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.
| Parameter | Card Decks | Retros |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 77.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Arne Harren | youngmo song |
Customer experience
Card Decks
Retros
In-app purchases
Card Decks
No in-app purchases
Retros
No in-app purchases









