Comparison

Delphi Pro vs TechStack by JSP

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

Head to head

Delphi Pro

Secured AI Chat & Image Maker

$0.99

📊 Productivity

★ 5.01 ratingsView app →

TechStack by JSP

FullStack Technical Solutions

Free

📊 Productivity

No ratingsView app →

About

Delphi Pro

Access advanced AI capabilities on your mobile device for instant answers and creative image generation. This tool is designed to assist with a wide range of queries and creative tasks, making AI accessible anytime.

Highlights

AI-powered chat assistance
Image generation capabilities
Answers to user queries
Mobile accessibility
Creative tool

Features

Read full description

Delphi brings the power of modern AI to your phone, anytime ready to help you. Delphi is also capable of image generation. You'll get answers to everything on your mind.

About

TechStack by JSP

Features

Read full description

Connecting End Users to the Professional Technical Community https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Delphi Pro4 screens

TechStack by JSP4 screens

Verdict

The call

The clearest difference is price: TechStack by JSP at Free against Delphi Pro's $0.99. TechStack by JSP also leads on update cadence (daily vs every 2 weeks) and iOS requirement (14.0.0 vs 16.0). Delphi Pro's advantage is ads (none vs shown). On 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

TechStack by JSP is free to download; Delphi Pro costs $0.99 up front. Delphi Pro sells 5 in-app purchases, starting at $7.99 per month and TechStack by JSP sells 9 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Delphi Pro ships an update every 2 weeks, TechStack by JSP daily. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 5 level

Delphi Pro versus TechStack by JSP: the parameters behind the verdict, then further details
Parameter	Delphi Pro	TechStack by JSP
Price	$0.99	Free — better
Rating	5.0 (1 ratings) — better	—
Number of ratings	1 — better	—
Update frequency	Every 2 weeks	Daily — better
Ads	No — better	Yes
In-app purchases	Yes	Yes
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad, Apple Watch	iPhone, iPad, iPod
Requires iOS	16.0	14.0.0 — better
Further details — not scored
Size	23 MB	80 MB
Age rating	17+	17+
Developer	Moritz Mahler	Daryl Marcano

In-app purchases

5 purchases

Delphi Pro

Subscriptions1

Delphi-Premium$7.991 Month

One-time4

20k Token$0.99
50k Token$1.99
100k Token$2.99

Show 1 more

300k Token$4.99

9 purchases

TechStack by JSP

Subscriptions9

TechStack (United States)$9.991 Month
TechStack (United States)$24.993 Months
TechStack (United States)$44.996 Months

Show 6 more

TechStack (United States)2 variants$49.993 Months
TechStack (United States)$74.991 Year
TechStack (United States)$89.996 Months
TechStack (United States)$124.993 Months
TechStack (United States)$239.996 Months
TechStack (United States)$449.991 Year

Questions

Is Delphi Pro free?

Delphi Pro costs $0.99, and also offers in-app purchases.

Is TechStack by JSP free?

TechStack by JSP is free to download, with in-app purchases available.

Do Delphi Pro or TechStack by JSP have ads?

TechStack by JSP shows ads; Delphi Pro does not.

Which is updated more often, Delphi Pro or TechStack by JSP?

Delphi Pro ships an update every 2 weeks, and TechStack by JSP daily. Most recently, Delphi Pro was updated on October 8, 2026 and TechStack by JSP on October 9, 2026.