Comparison

Semaphor vs isagpt

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

Head to head
About

Semaphor

This app offers secure team communication and collaboration with end-to-end encryption and private blockchain technology. It provides features like direct messaging, file sharing, and project-specific channels for real-time teamwork.

Highlights
  • End-to-end encryption
  • Secure file sharing
  • Private direct messaging
  • Unlimited project channels
  • Real-time collaboration
  • Native offline mode
Features
Read full description

Semaphor combines the best features of collaboration apps and encrypted messaging apps. Your team can work together through team messages, direct messages, and file sharing. Semaphor is secured by the power of private blockchain and end-to-end encryption. Semaphor brings you and your team: › End-to-end encryption to protect every file and conversation › Fast file uploads › Secure file sharing › Private direct messaging › Unlimited, project-specific channels › Real-time communication and collaboration › Password-less account creation › Native offline mode › Mobile and desktop friendly › Enterprise and LDAP ready › Supports bots and integrations › HIPAA/FINRA/FIRPA compliant › Reviewable source code To find out more about Semaphor, visit our website or send us an email. We always welcome your feedback and suggestions. ----- Subscriptions: - Basic: Free 30-day conversation history - Standard: Unlimited conversation history and access to Standard channels. $8.99/month - Pro: Unlimited conversation history and access to Pro channels. Team admin pays for all team members. $8.99/user/month - Payments will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by you and auto-renewal may be turned off by going to the your Account Settings after purchase. ----- By installing this app you agree to SpiderOak's: Privacy Policy, https://spideroak.com/policy/privacy-policy Term of Use, https://spideroak.com/policy/terms-of-use Service Agreement, https://spideroak.com/policy/service-agreement

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!

Screenshots

Semaphor3 screens
isagpt4 screens

Verdict

The call

The clearest difference is monetization model: isagpt at free against Semaphor's freemium. isagpt also leads on update cadence (every 4 days vs every 3 weeks). Semaphor's advantage is iOS requirement (10.0 vs 17.0). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Semaphor ships an update every 3 weeks, isagpt every 4 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Semaphor versus isagpt: the parameters behind the verdict, then further details
ParameterSemaphorisagpt
PriceFreeFree
Rating3.5 (15 ratings) — better—
Positive reviews15.4% of reviews—
Number of ratings15 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size19 MB1.7 GB
Age rating4+12+
DeveloperSpiderOak, Inc.IS browser LLC

Customer experience

Semaphor

All ratings15 ratings
Positive60.0%
Neutral6.7%
Negative33.3%
Written reviews13 reviews
Positive15.4%
Neutral38.5%
Negative46.2%

isagpt

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

In-app purchases

None

Semaphor

No in-app purchases

None

isagpt

No in-app purchases

Questions

Is Semaphor free?
Semaphor is free to download, with no in-app purchases.
Is isagpt free?
isagpt is free to download, with no in-app purchases.
Do Semaphor or isagpt have ads?
Neither Semaphor nor isagpt shows ads.
Which is updated more often, Semaphor or isagpt?
Semaphor ships an update every 3 weeks, and isagpt every 4 days. Most recently, Semaphor was updated on November 2, 2026 and isagpt on October 30, 2026.

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