Comparison

Reference Letter AI vs ProyectOS

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

Head to head
About

Reference Letter AI

Decode the hidden meanings in German employment certificates. This AI-powered tool analyzes your work reference, providing an overall grade, phrase explanations, and identifying subtle criticisms. Get suggestions for improvements and understand your rights.

Highlights
  • AI analysis of work certificates
  • Overall grade and phrase ratings
  • Identification of hidden criticism
  • Improvement suggestions
  • Legal information and correction letter template
  • OCR for photos, scans, and PDFs
  • On-device processing for privacy
Features
Read full description

Finally understand what your employment reference really says. Reference letters and work certificates are full of coded language: what sounds positive may actually be a poor rating. Reference Letter AI decodes these hidden messages – in seconds. HOW IT WORKS 1. Photograph your reference or upload a PDF 2. The AI reads EVERYTHING – even scanned documents 3. You get a complete, categorized analysis WHAT YOU GET • The hidden grade of your reference • Decoded phrases: what your employer really means • Strengths and weaknesses in plain language • Missing elements that devalue your reference • Concrete improvement suggestions with priority • Legal notes on your rights WHY IT MATTERS Recruiters read between the lines – now you can too. Whether you are job hunting, writing applications or negotiating your exit: your reference shapes your career. YOUR BENEFITS • Instant AI analysis instead of expensive consultants • Tokens instead of subscription: unlock once, keep forever • 24 languages, iPhone & iPad • Privacy-first: analysis via secured servers Upload your reference now and discover what it really says. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://arbeitszeugnisai.trssoftware.com/app-datenschutz

About

ProyectOS

Features
Read full description

ProyectOS es la herramienta ideal para profesionales de reformas, instalaciones y mediciones en obra. Permite registrar proyectos, medir estancias y anotar todos los elementos importantes (puertas, ventanas, tomas, pilares, etc.) de forma rápida, visual y organizada. Funciones principales: • Crear y gestionar proyectos con datos del cliente y ubicación. • Añadir paredes indicando medidas y ángulos. • Registrar obstáculos e instalaciones (electricidad, agua, gas, ventilación…). • Añadir elementos centrales como pilares o estructuras en suelo. • Adjuntar fotos a cada pared u obstáculo para mayor detalle. • Generar informes PDF profesionales con todas las mediciones. • Dibujo automático del plano en planta para visualizar la forma de la estancia. • Sincronización con iCloud: tus proyectos disponibles en todos tus dispositivos. • Compatible con iPhone y iPad. • Modo sin conexión: tus datos siempre disponibles. ProyectOS ahorra tiempo en obra y evita errores, manteniendo toda la información del proyecto accesible, ordenada y segura mientras trabajas.

Screenshots

Reference Letter AI4 screens
ProyectOS4 screens

Verdict

The call

The clearest difference is update cadence: ProyectOS at every 2 weeks against Reference Letter AI's every 3 months. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Reference Letter AI sells 4 in-app purchases, starting at $6.99 per 7 days and ProyectOS sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Reference Letter AI ships an update every 3 months, ProyectOS every 2 weeks. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 7 level
Reference Letter AI versus ProyectOS: the parameters behind the verdict, then further details
ParameterReference Letter AIProyectOS
PriceFreeFree
Positive reviews87.5% of reviews—
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.6 — better
Further details — not scored
Size15 MB53 MB
Age rating4+4+
DeveloperTINO RALF STRASSERJose Andres Briseno Vidal

In-app purchases

4 purchases

Reference Letter AI

Subscriptions1
  • Pro Version$6.997 Days
One-time3
  • 1 Token$8.99
  • 5 Tokens$34.99
  • 10 Tokens$59.99
1 purchases

ProyectOS

One-time1
  • Desbloquear versión completa$4.99

Questions

Is Reference Letter AI free?
Reference Letter AI is free to download, with in-app purchases available.
Is ProyectOS free?
ProyectOS is free to download, with in-app purchases available.
Do Reference Letter AI or ProyectOS have ads?
Neither Reference Letter AI nor ProyectOS shows ads.
Which is updated more often, Reference Letter AI or ProyectOS?
Reference Letter AI ships an update every 3 months, and ProyectOS every 2 weeks. Most recently, Reference Letter AI was updated on November 5, 2026 and ProyectOS on October 28, 2026.

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