Comparison

Gemma 2B AI Chat vs OnePreview

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

Head to head
About

Gemma 2B AI Chat

This AI assistant offers private, offline conversations to boost productivity and creativity. It's a one-time purchase, eliminating subscription fees. Download the LLM model after installation for secure interactions.

Highlights
  • Offline AI conversations
  • Enhances productivity
  • Boosts creativity
  • One-time purchase
  • No subscription fees
  • Secure and private
Features
Read full description

Introducing Gemma 2B AI Chat, your exclusive private AI assistant. Designed to enhance your productivity and creativity, this is a one-time purchase application that provides access to a comprehensive suite of AI capabilities without the need for recurring subscription fees. Eliminate the burden of subscription costs! Upon initial app installation, you will be prompted to download the LLM model to facilitate secure and private conversations. A minimum of 3 GB of free storage space is necessary to install the complete LLM model.

About

OnePreview

This app allows you to preview and interact with various developer file formats, including Markdown, code, databases, and archives, directly on your iPhone and iPad. It offers local processing for speed and privacy, with features like PDF export and structured data inspection.

Highlights
  • Markdown and MDX rendering
  • JSON, YAML, XML, CSV, TSV, TOML, ENV parsing
  • SQLite database inspection
  • Source code and log viewing
  • ZIP and TAR.GZ archive content preview
  • Mermaid diagrams and KaTeX math rendering
  • A4 PDF export for Markdown files
Features
Read full description

Preview Markdown, source code, structured data and archives on iPhone and iPad. OnePreview is a local-first file viewer with no account required. READ MARKDOWN, DIAGRAMS AND MATH View GitHub-style Markdown with tables, task lists and highlighted code. Switch between rendered content and source. Mermaid diagrams and KaTeX formulas use bundled rendering assets. EXPORT MARKDOWN TO PDF Open a standard Markdown file (.md or .markdown) in OnePreview to create an A4 PDF report. Check the actual PDF preview, with continued table headers, wrapped code, Mermaid diagrams and KaTeX formulas, then save it using the system file interface. Document content is processed on your device. INSPECT DATA, CODE AND ARCHIVES Read structured data and source code, inspect SQLite schemas and sample rows without editing the database, and see the folder hierarchy inside ZIP and TAR.GZ archives before extracting. SUPPORTED FORMATS Markdown (.md, .markdown), MDX, TextBundle, TextPack, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, INI, properties, Apple property lists (plist), SQLite (.sqlite, .sqlite3, .db), source code, plain text, logs, ZIP, TAR.GZ and TGZ. Syntax highlighting supports languages including Swift, Python, JavaScript, TypeScript, Java, C/C++, Objective-C, Ruby, Rust and Shell. OPEN YOUR FILES Tap Open File in OnePreview, or long-press a supported document in Files, choose Open With, then select OnePreview. A normal tap in Files may use Apple's built-in preview; OnePreview does not replace every system preview on iPhone or iPad. Try the sample folder from the home screen to explore supported formats.

Screenshots

Gemma 2B AI Chat3 screens
OnePreview4 screens

Verdict

The call

The clearest difference is review sentiment: OnePreview at 100% against Gemma 2B AI Chat's 0%. OnePreview also leads on price (Free vs $4.99) and rating (5.0 vs 1.7). Gemma 2B AI Chat's advantage is ratings volume (3 vs 1). On ads, in-app purchases and iOS requirement 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

OnePreview is free to download; Gemma 2B AI Chat costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

OnePreview holds the better App Store score, 5.0 against 1.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 0% of Gemma 2B AI Chat's written reviews are positive against 100% of OnePreview's.

UpkeepUpdate frequency

Gemma 2B AI Chat ships an update every 2 months, OnePreview weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
Gemma 2B AI Chat versus OnePreview: the parameters behind the verdict, then further details
ParameterGemma 2B AI ChatOnePreview
Price$4.99Free — better
Rating1.7 (3 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings3 — better1
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS18.017.0 — better
Further details — not scored
Size17 MB9 MB
Age rating9+4+
DeveloperSozzled LLC培克 罗

Customer experience

Gemma 2B AI Chat

All ratings2 ratings
Positive0.0%
Neutral50.0%
Negative50.0%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

OnePreview

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Gemma 2B AI Chat

No in-app purchases

None

OnePreview

No in-app purchases

Questions

Is Gemma 2B AI Chat free?
Gemma 2B AI Chat costs $4.99, with no in-app purchases.
Is OnePreview free?
OnePreview is free to download, with no in-app purchases.
Which has better reviews, Gemma 2B AI Chat or OnePreview?
OnePreview is rated higher. Gemma 2B AI Chat averages 1.7 out of 5 from 3 ratings, while OnePreview averages 5.0 from 1 ratings.
Do Gemma 2B AI Chat or OnePreview have ads?
Neither Gemma 2B AI Chat nor OnePreview shows ads.
Which is updated more often, Gemma 2B AI Chat or OnePreview?
Gemma 2B AI Chat ships an update every 2 months, and OnePreview weekly. Most recently, Gemma 2B AI Chat was updated on November 4, 2026 and OnePreview on October 31, 2026.

Other comparisons