Comparison

isagpt vs Chatika

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

isagpt

This application offers an AI experience that does not rely on data centers, aiming to reduce water and energy consumption. It empowers users to utilize AI directly on their devices, promoting environmental consciousness.

Highlights
  • Zero AI Datacenter reliance
  • Reduced water consumption
  • Lower energy usage
  • On-device AI processing
  • Environmentally conscious AI
Features
Read full description

Isagpt uses zero AI Datacenters. Water One day of using AI from Data Centers requires 500 millilitres of water per user just to cool the servers. A person drinks on average 1 Litre of water per day. So AI Data Centers are on track to consume half of our daily water intake. Energy An AI query sent to a Data Center consumes 10x the amount of electrical energy compared to a regular search query. Data Centers currently account for 4.4% of overall electricty consumption. So as AI takes over Data Centers the consumption might reach 10 x 4.4% which is 44%. That is nearly half of all our electricity consumption. Change Be the change you wish to see in the world. Stop using AI Data Centers. Start using Isagpt. Your AI. Your Phone. Your Planet!

About

Chatika

This AI chat client offers extensive customization and privacy for your conversations. It acts as a private browser for AI, allowing you to connect with various AI models using your own API keys without data storage on external servers. Enjoy features like web search, image support, and dynamic prompt adjustments.

Highlights
  • Bring Your Own Key (API)
  • Rich Chat Actions (quote, fork, revert)
  • Web Search integration
  • Image support for AI models
  • Customizable Persona System
  • Dynamic AI parameter settings
  • Thought Process View
Features
Read full description

Chatika is a free AI chat client that gives you complete freedom, flexibility, and privacy in your AI conversations. Think of it as a highly customizable private browser or Lego builder for AI chat — a pure client that facilitates communication with AI providers (cloud or local), without storing anything outside your device. Currently, the app UI supports English and 中文 (Simplified Chinese). AI chats themselves can be carried out in most languages. (More UI language options coming soon!) Key Features: • Bring Your Own Key – Chat with any supported AI model using your own API keys. No subscriptions required. • Rich Chat Actions – Select & quote, fork conversations, revert messages, regenerate replies. • Web Search – Search and chat with real-time information from the internet. • Image Support – Send images to compatible AI models. • Persona System – Built-in personas with the option to create and customize your own. • Custom System Prompts – Inject or modify prompts to shape AI behavior. • Dynamic Settings – Change parameters mid-conversation. • Thought Process View – See how reasoning models think step-by-step (for supported models). Chatika is designed for users who value control, privacy, and customization in their AI interactions. Whether you’re a writer, developer, researcher, or simply curious about AI, Chatika has a mode and persona that fits you. This is an indie project with no monetization plans. Your support and feedback are always welcome!

Screenshots

isagpt4 screens
Chatika4 screens

Verdict

The call

The clearest difference is update cadence: isagpt at every 4 days against Chatika's fortnightly. On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for isagpt against 5.0 for Chatika. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

isagpt ships an update every 4 days, Chatika fortnightly. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 9 level
isagpt versus Chatika: the parameters behind the verdict, then further details
ParameterisagptChatika
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 4 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better17.1
Further details — not scored
Size1.7 GB8 MB
Age rating12+4+
DeveloperIS browser LLCChenxing Liu

Customer experience

isagpt

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Chatika

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

isagpt

No in-app purchases

None

Chatika

No in-app purchases

Questions

Is isagpt free?
isagpt is free to download, with no in-app purchases.
Is Chatika free?
Chatika is free to download, with no in-app purchases.
Which has better reviews, isagpt or Chatika?
isagpt and Chatika are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do isagpt or Chatika have ads?
Neither isagpt nor Chatika shows ads.
Which is updated more often, isagpt or Chatika?
isagpt ships an update every 4 days, and Chatika fortnightly. Most recently, isagpt was updated on September 25, 2026 and Chatika on October 5, 2026.

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