Pricing Philosophy
Pay for what you use.
Flat, direct rates.
Adsorp runs on a simple credit-based consumption model where credits correspond directly to real USD value (1 Credit = $1.00 USD value). You only pay for what your models process, with all costs integrated directly into clean, unified per-action rates.
Free offline features
PDF rendering, device-native speech synthesis, and local Ollama integrations cost nothing.
1:1 Credit Value
Your balance represents real-world dollars. No complex tokens or abstract unit conversions.
Granular Billing
Credits are consumed dynamically based on exact processing sizes, down to fractions of a cent.
Equal Paid Features
All paid subscription plan tiers unlock equivalent cloud features. Only the credit pool size differs.
Flexible Subscription Tiers
Paid subscription plans build a monthly pool of credits. Paid tiers are feature-equivalent; choose based on your desired credit volume.
Feature Comparison
Read forever without paying a cent. Credits are only required for our high-end cloud AI models and premium text-to-speech services.
Included Offline (Free)
PDF Reading
Complete reading experience with our high-performance pdfrx engine.
Local TTS
Standard device voices. Support for Piper, Kokoro, and custom TTS available on desktop.
Local AI (Ollama)
Run open-source models like Llama 3 or Mistral directly on your hardware.
Local Translation
Translate and transform text entirely offline using your local Ollama models.
Library & Highlights
Full organizational toolset for your personal knowledge base.
Cloud Enhanced (Credits)
Neural TTS
CreditsExperience the world's most natural AI voices from Google and Gemini.
Cloud AI Explanations
CreditsInstant insights powered by industry-leading GPT-4o and Claude 3.5 models.
AI Translation & Transform
CreditsHigh-precision linguistic transformations powered by cloud AI.
AI Course Generation
CreditsTurn any document into a structured curriculum with full-depth indexing.
Cross-device Sync
CreditsSeamlessly transition between mobile and desktop with secure cloud storage.
Detailed Billing Terms & Conditions
We believe in complete clarity and predictability. Explore the detailed rules governing subscription tiers, credit lifetimes, cancellations, and usage tracking.
The Free Plan
The Free Plan is designed for offline-only use and comes with a perpetual credit balance of $0.00. Cloud models are unsupported on this tier.
- Ollama Integration Requirement: PDF AI interactions (like Teaching Mode, translation, and summaries) and AI Book Generation will only work if you host a local Ollama server on your machine and connect it to Adsorp.
- Offline Audio limitations: Audio playback is restricted to basic, device-native text-to-speech synthesis (device voices). Premium neural-quality voices are not supported.
Paid Tiers (Starter, Standard, Premium)
All paid subscriptions grant identical feature capabilities and model accesses. Higher tiers do not unlock additional AI capabilities, but instead provide a larger monthly credit injection.
- Feature Equivalence: Every paid plan unlocks the exact same models (GPT-4o, Claude 3.5 Sonnet) and premium Google Neural2/Wavenet/Chirp TTS voices. No capabilities are gated behind high pricing tiers.
- Credit Volume Suitability: Higher subscription tiers are tailored to sustain heavier workloads, such as writing extensive books with top-tier LLMs or compiling hours of high-quality neural voice synthesis.
Billing Policy & Disclosures
Ready to start reading?
Join the waitlist for early access to Standard and Premium.