Comparison

deepFormula vs VoicePDF

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

Head to head
About

deepFormula

Features
Read full description

deepFormula is the AI formulation assistant built for R&D scientists and product development teams. From first concept to finished specification, deepFormula guides your formulation decisions with structured workflows, industry-standard taxonomies, and a built-in Claude AI assistant. — FORMULATION WIZARD — Start a new formulation with a step-by-step wizard that maps your product to a two-level industry taxonomy — 8 major sectors (Food & Beverage, Personal Care, Pharmaceuticals, Agrochemicals, Polymers & Plastics, Paints & Coatings, Household & Industrial Cleaners, Nutraceuticals & Dietary Supplements) each with detailed sub-categories. The wizard captures formulation type, processing mode, and key performance targets, then launches the AI assistant with full context for your specific domain. — AI FORMULATION ASSISTANT — Every formulation session opens a context-aware chat powered by Claude. Ask about ingredient interactions, regulatory constraints, stability trade-offs, or processing parameters. The assistant knows your industry, your formulation type, and your stated objectives — answers are grounded in your session, not generic responses. — GENERATE & DIY MODES — Generate mode lets the AI propose a complete starting formula based on your targets — ingredients, percentages, processing notes, and rationale. DIY mode gives you a structured blank canvas to build from scratch with AI guidance available at every field. Switch between modes at any time. — FOCUS GROUP SIMULATOR — Simulate expert panel evaluation before physical prototyping. Define your formulation attributes and target specifications, set the number of virtual evaluators, and run a Monte Carlo simulation to estimate spec-pass probability for each attribute. Understand which parameters carry the most risk before committing lab resources. Results are presented as attribute-level statistics with pass/fail probability distributions. — FORMULATION LIBRARY — Every session is saved to a searchable library. Review past formulations, compare approaches across projects, export to PDF or CSV for lab notebooks and regulatory dossiers, and share directly with your team. The library persists across sessions with full chat history for each formulation. — KNOWLEDGE BASE — Build a persistent domain knowledge base for your organisation. Tag subjects, link to formulation sessions, and surface relevant references inside the AI chat. The knowledge base grows with your team's expertise and remains available offline. — DEMO MODE — A fully guided interactive demo walks through a complete formulation scenario — chocolate reformulation or fiberglass insulation design — in a step-by-step walkthrough. No account or subscription required to explore the app. Share the demo with stakeholders before purchasing. — SYNOPSIS SHEET — Each formulation generates a printable synopsis: industry classification, formulation type, key targets, ingredient summary, and AI rationale — ready to attach to a project brief or regulatory submission. deepFormula is designed for professional R&D use. AI outputs are advisory and should be validated by qualified formulators before production use. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

VoicePDF

Features
Read full description

VoicePDF: Scan and Record VoicePDF helps you turn documents, voice notes and QR codes into organized, shareable PDFs in seconds. Designed for speed and simplicity, it combines powerful scanning tools with smart cleanup and productivity features. Whether you need to digitize paperwork, record meetings, transcribe audio, reduce file sizes or free up storage space, VoicePDF gives you a complete set of tools in one clean interface. Key Features • High-quality document scanner Create sharp, clean PDF scans with automatic edge detection and image enhancement. • Voice recording & transcription Record meetings, ideas or memos and transcribe them into text. • PDF compression Reduce PDF file size while maintaining great readability. • Watermarks & protection Add confidential or custom watermarks to your documents before sharing. • QR & barcode scanner Scan QR codes and barcodes instantly with automatic detection. • Smart storage cleanup Find duplicate photos, similar images, large videos and other storage-heavy items to help free up space on your device. • Import & organize files Import PDFs, images and documents into a single organized library. • Fast sharing & export Export documents quickly and share them anywhere. Perfect For • Students • Professionals • Remote workers • Real estate agents • Small businesses • Everyday document management VoicePDF combines document scanning, voice recording, transcription, PDF tools and storage optimization into one powerful productivity app. Subscription Information VoicePDF Premium is available as an auto-renewable subscription with weekly and yearly plans. Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account may be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription at any time in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. Privacy Policy: https://sites.google.com/view/voicepdf-legal/inicio/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

deepFormula4 screens
VoicePDF4 screens

Verdict

The call

The clearest difference is iOS requirement: deepFormula at 13.0 against VoicePDF's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. deepFormula sells 2 in-app purchases, starting at $799.00 per month and VoicePDF sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference Ā· 5 level
deepFormula versus VoicePDF: the parameters behind the verdict, then further details
ParameterdeepFormulaVoicePDF
PriceFreeFree
Update frequency—Every 2 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size77 MB16 MB
Age rating4+4+
DeveloperJean Claude ZabaloffDANIEL CASTRILLO VEGA

In-app purchases

2 purchases

deepFormula

Subscriptions1
  • deepFormula$799.001 Month
One-time1
  • deepFormulaFree
2 purchases

VoicePDF

Subscriptions2
  • Premium Weekly7 Days trial$7.997 Days
  • Premium Yearly7 Days trial$44.991 Year

Questions

Is deepFormula free?
deepFormula is free to download, with in-app purchases available.
Is VoicePDF free?
VoicePDF is free to download, with in-app purchases available.
Do deepFormula or VoicePDF have ads?
Neither deepFormula nor VoicePDF shows ads.

Other comparisons