Comparison

DB50X vs Mollama

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

Head to head
About

DB50X

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

Highlights
  • Arbitrary precision calculations
  • RPN and algebraic operations
  • Complex numbers, vectors, matrices
  • Symbolic and numerical solving
  • Graphing and plotting
  • Engineering units and constants
  • Unicode text support
Features
Read full description

DB50X is a new high-precision scientific calculator inspired by the legendary HP50G series from Hewlett-Packard. It is not an emulator, but a redesign from scratch, which is faster, and delivers never seen before capabilities like computations in arbitrary precision. Like the original HP50G, DB48X supports an unlimited stack, RPN and algebraic operations, complex numbers, based numbers, vectors, matrices, text, symbolic computations, numerical solving and integration, graphing and plotting, statistics, engineering units, and well over 1000 built-in functions. It integrates a library of equations and constants covering mathematics, physics or chemistry. Using modern technologies, DB50X goes well beyond the original HP50G in many ways: - It is significantly faster, uses less memory, and features a higher-resolution 240x400 pixels graphical color display. - Integer and decimal values can have an arbitrarily large number of digits, so you can compute log(pi) with 200 digits in a few keystrokes. - The six function keys feature up to three function per key, giving quick access to up to 18 related functions at a time. - Complex numbers can mix and match polar and rectangular form. - Symbolic operations extend to complex numbers, vectors and matrices. - Based numbers can be in any base from 2 to 36, and support any number of bits, making it easy to emulate a 23-bit or 512-bit processor. - Text is represented using Unicode instead of the proprietary HP encoding, facilitating data exchange with the rest of the world. - Multiple graphs can be distinguished using colour patterns - Engineering units include all the modern evolutions of the SI system, and can be configured by the user, e.g. to integrate currency units with the exchange rate du jour. Converting between USD/hour and EUR/day has never been so easy! - A built-in hyperlinked help system documents functions simply by holding the corresponding key, and combine a quick start guide, a user manual and a reference manual. - Over 700K of memory is available for RPL programs. - Access to iCloud to save your program and edit them from your Mac. DB508X will run many user RPL programs designed for the HP48, HP49 or HP50 directly as is. However, since it is not an emulator, it will not run any HP binary object, and notably will not run HP50G games or anything involving system RPL. This is an early-access release. Please consult https://github.com/c3d/db48x/blob/stable/doc/5-Unimplemented.md for a list of commands that are not yet implemented. DB50X is part of a family of related calculators that include the black-and-white DB48X and the entry-level DB40X.

About

Mollama

This AI companion runs entirely on your device, ensuring complete privacy and security. It offers intelligent conversations, creative support, and problem-solving without sending your data to external servers. Enjoy offline functionality and real-time interaction with various AI models.

Highlights
  • Fully on-device processing
  • Zero data transmission
  • Offline functionality
  • Real-time interaction
  • Multi-model support
  • Contextual understanding
Features
Read full description

Mollama: Your Intelligent AI Companion, Running Entirely On-Device Mollama is a privacy-first, secure AI assistant that processes everything locally on your device. It offers intelligent conversations, creative support, and problem-solving capabilities without sending your data to external servers. ## Privacy and Security - Fully on-device processing: Complete control over your data, no cloud dependency - Zero data transmission: No collection, storage, or sharing of personal information ## Core Technologies: MLX and Ollama - Powered by Apple Neural Engine: Efficient on-device AI for optimized performance - Open-source language models: Flexibility to choose models suited to different tasks ## Key Features - Offline functionality: Operates seamlessly without internet after initial setup - Real-time interaction: Natural conversation experience with quick responses - Multi-model support: Adapts to various tasks with different AI models - Contextual understanding: Remembers conversation history for consistent replies - User-friendly interface: Intuitive design for easy and straightforward use ## Ideal for - Developers: Code generation, debugging, technical assistance - Writers: Creative writing, text editing, brainstorming - Students: Homework help, research support, exam preparation - Professionals: Email drafting, report generation, data analysis - Creatives: Idea generation, storytelling, problem-solving - Lifelong learners: Exploring knowledge across multiple fields ## Technical Highlights - MLX integration: Unlocks the full potential of Apple's machine learning accelerator - Ollama support: Effortless management of large open-source language models - Resource-efficient: Optimizes performance while minimizing battery usage ## Privacy Commitment All data is processed locally on your device; we do not collect or transmit any personal information, ensuring your privacy is always protected. ## Get Started Download Mollama now to explore the next generation of AI technology, combining intelligence with top-notch privacy protection. ## Important Notes - Storage requirements: Sufficient device space is needed for AI model operation - Device performance: Experience may vary based on hardware specifications Download Mollama now and step into a new era of secure, private AI experiences.

Screenshots

DB50X4 screens
Mollama4 screens

Verdict

The call

The clearest difference is review sentiment: DB50X at 100% against Mollama's 42%. DB50X also leads on rating (5.0 vs 3.4) and iOS requirement (14.0 vs 17.0). Mollama's advantage is price (Free vs $9.99) and ratings volume (36 vs 9). On update cadence, 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

Mollama is free to download; DB50X costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DB50X holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 9 and 36 respectively. Written reviews point the same way: 100% of DB50X's written reviews are positive against 42% of Mollama's.

UpkeepUpdate frequency

DB50X ships an update every 3 weeks, Mollama every 2 weeks. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

Scorecard6 real differences · 4 level
DB50X versus Mollama: the parameters behind the verdict, then further details
ParameterDB50XMollama
Price$9.99Free — better
Rating5.0 (9 ratings) — better3.4 (36 ratings)
Positive reviews100.0% of reviews — better41.5% of reviews
Number of ratings936 — better
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better17.0
Further details — not scored
Size7 MB296 MB
Age rating4+4+
DeveloperChristophe de Dinechin飞 杨

Customer experience

DB50X

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Mollama

All ratings36 ratings
Positive55.6%
Neutral16.7%
Negative27.8%
Written reviews53 reviews
Positive41.5%
Neutral18.9%
Negative39.6%

Bugs and requests

DB50X

Not enough reviews yet to summarise bugs or requests.

Mollama

Reported bugs

18 issues
  • App crashes on sending messages with certain models
  • Tokenizer metadata errors in offline mode
  • Unsupported model type errors (e.g., Gemma, Qwen3)
  • Models not loading when selected
  • App freezes phone during model download
Show 13 more
  • Download bar lags app significantly
  • Downloads stop when app is inactive
  • Downloaded models stop working offline
  • App crashes when trying to run chain-of-thought models
  • App crashes with Qwen2.3 35b
  • Keyboard overlaps chat box and send button
  • Cannot load external servers
  • App crashes when trying to chat
  • App crashes on newer generation iPad with Qwen2.3 35b
  • App crashes on older iPhone 11 Plus
  • Ollama access not working
  • App crashes when trying to send prompts in long chats
  • Camera button in chat window doesn't work

Requested features

10 requests
  • Add notification permission for background downloads
  • Show LLM name for each answer
  • Support for Qwen3 family of models
  • Ability to use any HuggingFace MLX models
  • Allow user-defined model folders
Show 5 more
  • Adjustable model parameters (temperature, etc.)
  • Shortcut support
  • Support for interacting with shortcuts
  • Ability to modify system prompt
  • Add a donate button

In-app purchases

None

DB50X

No in-app purchases

None

Mollama

No in-app purchases

Questions

Is DB50X free?
DB50X costs $9.99, with no in-app purchases.
Is Mollama free?
Mollama is free to download, with no in-app purchases.
Which has better reviews, DB50X or Mollama?
DB50X is rated higher. DB50X averages 5.0 out of 5 from 9 ratings, while Mollama averages 3.4 from 36 ratings.
Do DB50X or Mollama have ads?
Neither DB50X nor Mollama shows ads.
Which is updated more often, DB50X or Mollama?
DB50X ships an update every 3 weeks, and Mollama every 2 weeks. Most recently, DB50X was updated on November 8, 2026 and Mollama on November 4, 2026.

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