OnSpace AI - Build Apps with AI, No Code

Sweet little vibe coding site. It's produced a decent app for me so far, cant wait to see the rest.

⚠️ Warning: 5,000 credits vanished for a "Theme Toggle" – No transparency on costs

Rating: ⭐⭐ (2/5) – Currently, because the product feels untrustworthy.

Review:

The Good:

When it works, OnSpace is genuinely impressive. The ability to spin up a full-stack app just by chatting with AI is powerful, and for simple prototypes, it feels like magic.

The Bad (The Dealbreaker):

I recently had 1,000 credits in my account. I sent a single prompt asking the AI to add a very simple feature: a theme toggle (light/dark mode). The AI completed the task successfully, but when I checked my balance afterward, all 1,000 credits were gone.

There was no warning. No breakdown of costs. No way to say "No" at any step.

Looking at other users' reviews, I am not alone:

· One user reported wasting 3,000+ credits just trying to get a basic image crop feature to work, describing the process as a "battle" that left them "frustrated and too stressed to carry on".

· Another user on the App Store stated there is "NO WAY to track your credit usage" and that their 12,000-credit plan was exhausted in a day after roughly 100 prompts, suspecting a cost of ~60 credits per inquiry.

· A Trustpilot review sums it up perfectly: it feels like a "cash grab" where the system enters a cycle of errors, burning credits each time it "claims" to fix an issue.

Why I feel scammed:

I am not against paying for value. I am against paying blindly. If a simple toggle costs 1,000 credits, just tell me upfront so I can decide. The current system feels like handing a blank check to an unreviewable mechanic.

My Request to the Founders:

This is a great concept being destroyed by a lack of transparency. Please add:

1. Pre-execution cost estimates ("This task will cost ~X credits. Proceed?")

2. A real-time, visible credit counter during the build process.

3. A detailed transaction log showing exactly what each action cost.

Until I can trust where my credits are going, I cannot recommend this platform to anyone.

Aplicativo bacana. No entanto, é preciso algum conhecimento de programação para criar algo além de uma simples simulação que valha a pena.

It's simply incredible. In just a few steps, I built three apps about track cycling that didn't exist on the Play Store. These apps replaced sheets of paper and Excel spreadsheets for optimization. Spectacular!

Great app! Wish it showed how many credits are being used and maybe even how much certain kinds of prompts use up. It's hard to do a whole lot before it starts asking for a plan upgrade.

Cool app. However, it does take some understanding of coding to create anything beyond a simulation that is worthwhile

Cool app. However, it does take some understanding of coding to create anything beyond a simulation that is worthwhile

This is a great way to build app concepts and deploy to appstore. I like how it builds a lot on each pass and seems to do a thorough job but it does burn what seems like a random amount of credits each time and does not offer to fix bugs or breaks on it's own dime like lovable does. It has a realtime runtime error detector but I haven't seen it show me ANY errors when there are blatant errors in the code or broken renders sometimes. I suggest really flushing out your idea first in a scope form with ChatGPT or Claude and think ahead of where you want to start, where you want to go, users, auth, payments, etc. Most of my issues have been with RevCat and IOS trying to get in-app payments working right

Nice app, they're very generous with there tokens and gets my app right and completed faster than the to other ai app builders.