Inmate Inbox vs .i.s.o.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Inmate Inbox
This app facilitates real-time communication between users and incarcerated individuals. It allows for sending and receiving messages, as well as sharing photos, helping to maintain connections with loved ones.
- Real-time messaging
- Photo sending
- Account management
- Contact list management
- Stay connected on the go
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Our “Inmate Inbox” Mobile app is free to download and will allow you to stay connected with your family and friends. Enjoy real time communications with your loved ones while on the go. Features Include: -Managing Account & Contacts List -Sending and Receiving Messages in Real-time -Sending Photos to Inmate (Delivered once approved by Jail Staff) Pricing: -Message cost and Photos cost will vary based on the Facility.
.i.s.o.
A calm, ad-free social space for artists and art lovers. Focuses on showcasing art without algorithmic manipulation or profit-driven exploitation. Offers detailed image information and a curated experience.
- No algorithmic feed manipulation
- Ad-free experience
- Detailed image information (lens, shutter, histogram)
- Curated discovery of art
- User profiles as portraits
- Advanced search filters
- Screenshot disabling for content protection
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Most apps want more of you. More time, more taps, more of your attention sold to whoever's buying. .i.s.o. wants less. It's a small, calm place for photographers, artists, and the people who love their work, built on the "radical" idea that you should be able to look at something beautiful without being exploited for profit. There's no algorithm here deciding what you see. No advertising snuck between the images. No artificial intelligence shaping the feed, writing the captions, or guessing what you'll tap next. Only art, made by people, shown honestly. Inside, things move slowly on purpose. You'll find photographs you'd never have come across otherwise and feeds that hold still instead of chasing your attention. A map that lights up wherever work is being made, gathered into a heatmap rather than a pin, so you can wander without anyone tracking where a photo was taken. Images shown one at a time, given room to breathe, with the lens, shutter speed, and histogram a slide away. Leave a heartbeat for the work you love or keep an inspiration for the few pieces you can't forget. Your profile reads more like a portrait than a form - your gear, your collections, the artists who shaped you. Nothing here is built to be measured against anyone else. And when you go looking, the filter actually narrows: by subject, medium, gear, or color, stacked to further refine your search. Every long exposure of water. Every street frame shot on 35mm. Exactly what you came for, and nothing sponsored in the way. It's all lovingly tended by hand. Screenshots are disabled, so your work can't be scraped, and your photographs never train a generative model or live anywhere else online. When something's reported, a person reads it, and if someone has to leave, they're told why. It costs one dollar a month, and that dollar is used purely to keep the services running. Your data isn't for sale because there's no one to sell it to. The app answers to you, because you're the one it's for. If you make things, or simply love the art people create, we would love to have you.
Screenshots
Verdict
The clearest difference is review sentiment: .i.s.o. at 100% against Inmate Inbox's 16%. .i.s.o. also leads on rating (5.0 vs 3.1) and update cadence (every 2 weeks vs every 2 months). Inmate Inbox's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (90 vs 1). On price, ads and in-app purchases 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. Inmate Inbox sells 4 one-off in-app purchases and .i.s.o. sells 1 in-app purchase, starting at $1.00 per month. Whichever you choose, the download price is not the number that matters.
.i.s.o. holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Inmate Inbox has 90 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 16% of Inmate Inbox's written reviews are positive against 100% of .i.s.o.'s.
Inmate Inbox ships an update every 2 months, .i.s.o. every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Inmate Inbox | .i.s.o. |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (90 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 16.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 90 — better | 1 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 34 MB | 69 MB |
| Age rating | 4+ | 12+ |
| Developer | Stewart | brandon owen |
Customer experience
Inmate Inbox
.i.s.o.
In-app purchases
Inmate Inbox
- inmateinbox$5.99
- InmateInbox$10.99
- InmateInbox$15.99
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- InmateInbox$20.99
.i.s.o.
- .i.s.o.$1.001 Month









