Dunas vs Postcards Are Fun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dunas
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Most apps give you AI to talk to. Dunas gives you AI that gets things done. Build your own agents. Put them in chats. Get things done. --- THREE THINGS. THAT'S IT. CREATE AGENTS WITH ONE CLICK. No setup. No technical requirement. Name it. Shape it. EACH AGENT GETS ITS OWN COMPUTER AND EMAIL ACCOUNT. A real machine. A real inbox at [agent]@agent.dunas.ai. They do real work, not chat tricks. TALK TO YOUR AGENTS AND YOUR CONTACTS IN THE SAME CHAT. Your partner, your accountant, your contractor - and the agents that work for you - share a room. --- WHAT THIS UNLOCKS Your scheduling agent posts the contractor's quote in the family group, where everyone can see it. Your agent receives invoices and payment slips. It files everything to you and sends to your accountant. Every agent has a computer. They read attachments. They search the web. They send email. They file documents. Not chat tricks. Free during beta. iPhone only. Android on the roadmap.
Postcards Are Fun
Share life's moments with close friends and family through voice notes and photos. This app transforms your ramblings into digital postcards, fostering genuine connection without the pressure of public performance.
- Record voice notes or type updates
- Add photos to your messages
- Transform updates into digital postcards
- Share with close friends and family circles
- No followers or vanity metrics
- Preserves your authentic voice
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Ramble in. Postcard out. Talk or type about your day — big stuff, small stuff, a sandwich, the coffee you had, or the friend you saw. Add photos if you want. We'll turn it into Postcards for your friends and family. This is social media without followers, just friends. It's a beautiful place to share what's actually happening in your life - weekend adventures, small things about your day, vacation highlights, outings with the kiddos, and more - with the people you actually care about. This is not a place to worry about looking cool. Just do you. HOW IT WORKS 1. Ramble. Open the app and talk or type — about your morning, your weekend, your kid's first soccer game, the weird thing your boss said. Add a few photos if you want. 2. Get your postcard. We turn your voice notes and photos into a fun postcard. Edit it if you want. 3. Share it. Send it to your Close Friends, a custom circle, or just one person. They'll see it on their card. That's it. WHO IT'S FOR — The group chat that's gone quiet because nobody has time for a real update — Parents who want to keep grandparents in the loop without another Facebook account — Friends scattered across cities who used to send long emails and now send nothing — Anyone who misses when sharing your life online felt small and human WHAT MAKES POSTCARDS DIFFERENT → No followers and vanity metrics. Just real friends and family. → Your voice, not a template. We preserve how you actually talk. → Close Friends by default. Public posting isn't the point. → Daily logs, weekend recaps, single stories — share what fits. → It's social media that is fun and actually makes you feel good. Postcards is for the small, real audience in your life. The five people. The group chat. The family thread. The friends who'd actually want to know. Ramble in. Postcard out. — Made with care in NYC. Questions, ideas, or just want to say hi? hello@postcards.fun
Screenshots
Verdict
Dunas and Postcards Are Fun are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Dunas ships an update every 8 days, Postcards Are Fun every 11 days. The most recent releases landed on September 15, 2026 and July 21, 2026 respectively.
| Parameter | Dunas | Postcards Are Fun |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 8 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 42 MB | 109 MB |
| Age rating | 17+ | 17+ |
| Developer | Dunas Desenvolvimento de Software Ltda | Biographer, Inc |
In-app purchases
Dunas
No in-app purchases
Postcards Are Fun
No in-app purchases





