Solair AI vs Hephaistos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solair AI
This app provides powerful AI capabilities directly on your device, ensuring complete privacy for your conversations, health data, and documents. It offers various AI models for different tasks, including image analysis and document summarization, with optional web search for up-to-date information.
- 100% On-Device AI Processing
- Auto Mode for Task-Specific Models
- Complete Privacy and No Data Collection
- Health Intelligence with Apple Health Integration
- Voice Mode for Spoken Conversations
- Personal Memory and Document Analysis
- Multiple AI Models and Vision Capabilities
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Private by default. Frontier when you want it. Solair puts every kind of AI in your pocket, and keeps it private. Run powerful models fully on-device with no account and no internet, or connect Claude, ChatGPT, Grok and more when you want the frontier. Create images along the way, and keep every one in a gallery of your own. RUN AI ON YOUR DEVICE • 100% on-device models, no account, no sign-up, no tracking. Once a model downloads, everything works offline. • Your conversations, photos, health data, and documents are processed locally and never leave your device. • Auto Mode picks the right model for each message: Fast for quick questions, Smart for deep reasoning, Vision for photos and documents. • A duress code and fully local processing mean no one can read your data, not even us. BRING YOUR FAVORITE AI • Connect Claude, ChatGPT, Grok, Kimi, DeepSeek, Mistral, and more in one tap, just paste your API key. • Send photos, PDFs, and videos, watch reasoning models think, and generate images where supported. • Real web research: cloud models search the web themselves and show every source they read. • With your permission, they can read your health, calendar, and weather, and chart it for you. • Tokens, estimated spend, and voice minutes tracked per provider. • Your memory and past chats stay on your device unless you choose to share them. CREATE IMAGES, AND KEEP THEM ALL • Generate images right in your conversation. Choose the quality, the shape, and how many, and see what each option costs before you create. • Every image you make lands in a gallery of your own: folders you name, favorites, and full-screen browsing. • Pinch to zoom, swipe to move through them, and see them in real HDR that glows on your display. • Jump from any image straight back to the conversation that created it. TALK TO IT • Live voice conversations with ChatGPT and Grok, interrupt anytime, and the whole talk lands in your chat as a transcript. • Every other provider gets a voice on-device, only text ever leaves your phone, never audio, and live transcription types your words as you speak. MORE TO LOVE • Build your own apps (beta): describe one in a sentence and Solair makes a real, working app that runs offline. Four finished apps are included. • Scheduled tasks: give Solair a job and a time, and the answer arrives as a notification, all on your device. • Personas: chat with friends, historical figures, or build your own. • Personal memory that learns your preferences, and document analysis with instant summaries. • Health intelligence, ask about steps, sleep, and workouts from Apple Health, all on-device. Informational only, not medical advice. • Connect to your own server (Ollama and more) securely over Tailscale. • A beautiful Liquid Glass interface for iOS 26, with an engine switcher, sidebar search, and customizable themes. • Models included: Qwen3 & 3.5, Llama 3.2, Mistral, Gemma 3, plus coding, lightweight, and vision models like Qwen VL and LFM2.5. WHY SOLAIR Most AI apps send everything to the cloud. Solair runs on your device first, so your private data stays private, and reaches for the cloud only when you choose. REQUIREMENTS • iPhone A14 or newer, iPad A12 or newer, Mac with Apple Silicon. iOS 26 or later. 500MB to 5GB per on-device model. Solair is free with no ads. Optional tips support development but never lock features. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Hephaistos
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Votre IA personnelle, partout. Hephaistos réunit dans une seule app vos conversations avec Jarvis, vos recherches, vos documents et vos automatisations. Posez une question, reprenez une idée plus tard et gardez le contexte utile à portée de main. UNE IA QUI VOUS ACCOMPAGNE - Conversations fluides avec réponses en temps réel - Mémoire personnelle et préférences - Recherche web avec sources vérifiables - Questions sur vos PDF, DOCX, notes et fichiers - Voix, pièces jointes, favoris et export - Agents et automatisations pour les tâches répétitives DEUX FAÇONS DE L'UTILISER Choisissez Hephaistos Cloud pour démarrer sans gérer de machine, ou connectez votre propre serveur compatible pour garder la maîtrise de l'inférence. Le téléchargement de l'app est gratuit. Hephaistos Cloud est un abonnement optionnel dont le prix et la durée sont affichés avant l'achat. CLAIR SUR VOS DONNÉES Hephaistos ne vend pas vos données et ne vous suit pas entre les apps ou les sites. Chaque mode indique où les requêtes sont traitées. Les contrôles d'export, de réinitialisation et de suppression restent accessibles dans l'app. ET AUSSI - Agora communautaire avec signalement et modération - Messages directs chiffrés de bout en bout côté client - Connexion sur plusieurs appareils - État du service et diagnostics lisibles POUR COMMENCER 1. Téléchargez gratuitement Hephaistos. 2. Choisissez Hephaistos Cloud ou votre serveur personnel. 3. Ouvrez Jarvis et commencez. CONDITIONS ET CONFIDENTIALITÉ Conditions d'utilisation (EULA Apple standard) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Politique de confidentialité : https://gethephaistos.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Hephaistos at every 2 days against Solair AI's weekly. Hephaistos also leads on iOS requirement (16.0 vs 26.0). 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
Both are free to download. Solair AI sells 3 one-off in-app purchases and Hephaistos sells 6 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.
Solair AI ships an update weekly, Hephaistos every 2 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | Solair AI | Hephaistos |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (37 ratings) — better | — |
| Positive reviews | 81.3% of reviews | — |
| Number of ratings | 37 — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 123 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Simon Majar | Logan Ablaoui |
In-app purchases
Solair AI
- Coffee tip$3.99
- Pizza$9.99
- Thank you$19.99
Hephaistos
- Spark (monthly)$8.991 Month
- Flame (monthly)$24.991 Month
- Titan (monthly)$44.991 Month
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- Spark (yearly)$89.991 Year
- Flame (yearly)$249.001 Year
- Titan (yearly)$399.001 Year









